traditionally, the builder was a separate machine. Zaerc made changes to the build system so that it could be run in a chroot.

You can take the stuff from the /var/lmce-build/svn/LinuxMCE-0810/src/lib directory, and put it into the src/lib of a clean checkout, and use my devtools.tar.gz for active dev...but the builder is there to make sure that any packages you build will build correctly.